
#include "fast_gelu_tiling.h"
#include "register/op_def_registry.h"
#include "tiling/platform/platform_ascendc.h"


namespace optiling {
const uint32_t BLOCK_SIZE = 32;
static ge::graphStatus TilingFunc(gert::TilingContext* context)
{
    FastGeluTilingData tiling;
    uint32_t sizeofdatatype;
    uint32_t totalLengthAligned;
    auto ascendcPlatform =
        platform_ascendc::PlatformAscendC(context->GetPlatformInfo());
    auto socVersion = ascendcPlatform.GetSocVersion();
    uint64_t ub_size;
    ascendcPlatform.GetCoreMemSize(platform_ascendc::CoreMemType::UB, ub_size);
    auto aivNum = ascendcPlatform.GetCoreNumAiv();
    auto aicNum = ascendcPlatform.GetCoreNumAic();

    uint32_t totalLength = context->GetInputTensor(0)->GetShapeSize();
    auto dt = context->GetInputTensor(0)->GetDataType();
    if (dt == 1) {
        sizeofdatatype = 2;
    }

    uint32_t ALIGN_NUM = BLOCK_SIZE / sizeofdatatype;  
    uint32_t ub_block_num_real =
        ((ub_size) / BLOCK_SIZE / 2) * 13 /
        20;  
    uint32_t ub_block_num = 1024;//2240 2320  
    uint32_t tile_num;

    if (ub_block_num % 2 != 0) {
        ub_block_num = ub_block_num - 1;
    }

    if (totalLength % ALIGN_NUM != 0) {  
        totalLengthAligned =
            ((totalLength + ALIGN_NUM - 1) / ALIGN_NUM) * ALIGN_NUM;
    } else {
        totalLengthAligned = totalLength;
    }

    if (totalLengthAligned <= ub_block_num * ALIGN_NUM) { 
        context->SetBlockDim(1);
    } else {
        if (((totalLengthAligned / ALIGN_NUM) % ub_block_num) ==
            0) {  
        if ((totalLengthAligned / ALIGN_NUM / ub_block_num) <=
            aivNum) {  
            context->SetBlockDim(totalLengthAligned / ALIGN_NUM / ub_block_num);

        } else {
            context->SetBlockDim(aivNum);
        }
        } else {  
        if (((totalLengthAligned / ALIGN_NUM / ub_block_num) + 1) <=
            aivNum) {  
            context->SetBlockDim((totalLengthAligned / ALIGN_NUM / ub_block_num) +
                                1);
        } else {
            context->SetBlockDim(aivNum);
        }
        }
    }

    auto block_dim = context->GetBlockDim();
    uint32_t blockLength = 0;
    uint32_t tileLength = 0;
    uint32_t lasttileLength = 0;

    blockLength = totalLengthAligned / block_dim;
    tile_num = blockLength / ALIGN_NUM / ub_block_num;
    if ((totalLengthAligned / block_dim / ALIGN_NUM) % ub_block_num == 0 ||
        tile_num == 0) {  
        if (tile_num == 0) {
            tile_num = 1;
        } 
        if (blockLength < ub_block_num * ALIGN_NUM) {
            tileLength = ((blockLength / ALIGN_NUM) + 1) / 2 * 2 * ALIGN_NUM;
            lasttileLength = tileLength;
        } else {
            tileLength = ub_block_num * ALIGN_NUM;
            lasttileLength = tileLength;
        }
    } else { 
        tile_num = tile_num + 1;
        tileLength = ub_block_num * ALIGN_NUM;
        lasttileLength = blockLength - (tile_num - 1) * tileLength;
    }
    context->SetTilingKey(1);
    tiling.set_blockLength(blockLength);
    tiling.set_tileNum(tile_num);
    tiling.set_tileLength(tileLength);
    tiling.set_lasttileLength(lasttileLength);

    tiling.SaveToBuffer(context->GetRawTilingData()->GetData(),
                        context->GetRawTilingData()->GetCapacity());
    context->GetRawTilingData()->SetDataSize(tiling.GetDataSize());
    size_t* currentWorkspace = context->GetWorkspaceSizes(1);
    currentWorkspace[0] = 0;
    return ge::GRAPH_SUCCESS;
}
}


namespace ge {
static ge::graphStatus InferShape(gert::InferShapeContext* context)
{
    const gert::Shape* x1_shape = context->GetInputShape(0);
    gert::Shape* y_shape = context->GetOutputShape(0);
    *y_shape = *x1_shape;
    return GRAPH_SUCCESS;
}
}


namespace ops {
class FastGelu : public OpDef {
public:
    explicit FastGelu(const char* name) : OpDef(name)
    {
        this->Input("x")
            .ParamType(REQUIRED)
            .DataType({ge::DT_FLOAT16, ge::DT_FLOAT})
            .Format({ge::FORMAT_ND, ge::FORMAT_ND})
            .UnknownShapeFormat({ge::FORMAT_ND, ge::FORMAT_ND});
        this->Output("y")
            .ParamType(REQUIRED)
            .DataType({ge::DT_FLOAT16, ge::DT_FLOAT})
            .Format({ge::FORMAT_ND, ge::FORMAT_ND})
            .UnknownShapeFormat({ge::FORMAT_ND, ge::FORMAT_ND});

        this->SetInferShape(ge::InferShape);

        this->AICore()
            .SetTiling(optiling::TilingFunc);
        this->AICore().AddConfig("ascend310b");

    }
};

OP_ADD(FastGelu);
}
